Before this, the King of Castile stayed a few days near Óbidos in a village called Bombarral, because of the counsel of his men who advised him not to besiege Lisbon until his fleet arrived, so that all the shoreline would be under their control, and no assistance whether of men or supplies could reach the city from the other side of the Tagus, and likewise for other reasons already recorded. Thus the king took his ease there for several days, and then approached the city through those villages where he could find the best repose, until he came to a large and spacious village called Lumiar, a league from the city, and there he proposed to remain and rest for a while.

His men installed themselves in the many fine villages that there are in that district. While the king was in the vicinity, his men did not go to skirmish against the city, except for only a few times, because they were some distance away and thus it was not convenient for them.

Nevertheless, one day some captains came with their men-at-arms, foot soldiers and crossbowmen, up from the valley of Santa Bárbara to the hill of São Gens; there they gathered in large bands with their banners, protected by a pavisade, jeering at the men of the town. When they had been there for a little while, they moved against the Gate of Santo Agostinho. Count Álvaro Pérez de Castro, his son Dom Pedro, Mem Rodrigues and Rui Mendes, who were the sons of Gonçalo Mendes de Vasconcelos, were responsible for guarding that sector; they had a total of 200 lances with them, besides the men of the city who were in their company. When they saw the Castilians in that array, some of them went out to skirmish. As both sides were skirmishing with a will, a good nobleman from among those enemy captains was taken prisoner; his name was Juan Ramírez de Arellano. When he was captured, the men of the city took heart, and drove the enemy back, down the long slope to the bottom. They rode dragging their banners over the planted wheat fields on the side of the hill, where there were several wounded and dead.